robertson



(No ModeL) W. H. ROBERTSON.

DEVIGB 'FOR STOPPING LEAKS IN WATER PIPBS'.

No. 327,899. Patented Oct. 6, 1885 F/c. I. F/cf2.

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linrrnn STATES PATENT OFFICE.

VILLIAM H. ROBERTSON, OF TORONTO, ONTARIO, CANADA.

osvlcE FOR sToPPlNG Lr-:AKs IN wATE'R-PIPES.

PECIFICATION forming part of Letters Patent No. 327,899, datel October6, 1885.

Application filed March 523, 1885. Serial No. 159,757. (No model.)

.To all whom it may concern- Be it known that I, WILLIAM HUrcHINsoNRoBER'rsoN, a subject of the Queen of Great Britain, residing atToronto, in the county of York, Province of Ontario, Canada, have in-Vented certain new and useful Improvements in Devices for Stopping Leaksin Lead Pipes; and I do hereby declare that the :following is a full,clear, and exact description of. the same.

My invention has relation to a device for the more effectual closing ofbreaks in lead pipes, whereby a perfectly secure water-tight joint issecured with theleast possible expense, and without the necessity ofcalling in the services of a pluniber; and it consists of an ordinaryclamp, in which fit top and bottom elongated cups having sharp-Cuttingedges, which grasp the pipe, and,owing to the pressure of theclan1p,enter the surface of the pipe all round said edges, and secure aperfectly water-tight joint.

In the drawings, Figures 1 and 2 are front and side views, respectively,of my device, with the pipe inserted. Fig. 3 is a view of one of theelongate cups.

A is the clamp cast or constructed in the ordinary way.

B is a pipe which wc suppose to have been burst.

O is the bottom cup, and D the top one. The bottom cup is inserted inthe seat E of the clamp, which is then brought to the pipe, and the topclanip is then placed on the side of the pipe, so as to cover the crackor burst, when the screw is turned, and, the top cup forced, its sharpedges a, as well as the sharp edges of the bottoin cup, coinlnence toenter the exterior surface`0f the pipe,and con' tinued pressure willdrive the cutting'edges home until it is impossible for any water toescape, no matter What pressure is exerted. It will be observed that asboth cups are constructed in precisely the same manner, they both actalike, and it is iinniaterial which is applied first.

b and c are notches. If it is desired to remove the clamp for anotherleak, Wire may be bound round these notches, effectually securing thecups to the pipes.

What I claini as my invention is- 1. In a device for stopping leaks inpipes, the combination, with a clamp, A, provided with a screw andformed with a seat, E, of cups O and D, one of said cups fitting in theseat of the clainp, and the other adapted to have the screw bear againstit, and both formed with sharp edges a, substantially as described.

2. A device for stopping leaks in pipes,consisting of the two elongatedcups C and D, formed with sharp edges on their inner faces to enter apipe, and having notches b and c on their exterior faces, substantiallyas and for the purpose described.

NV. H. ROBERTSON.

Vitnesses:

WM. M. HALL, F. V. SPINK.

